MBR sewage treatment device facilitating solid-liquid separation

Abstract

This utility model discloses an MBR wastewater treatment device that facilitates solid-liquid separation. An electrically controlled valve is installed on the top right side of the drainage pipe. A flushing pipe is fixedly connected to the bottom end of the electrically controlled valve. A flushing pump is installed in the upper middle position of the flushing pipe. A multi-hole conduit is connected to the bottom end of the flushing pipe. A connecting pipe is fixedly connected to the bottom end of the multi-hole conduit. A circulation pipe is fixedly connected to the bottom end of the connecting pipe. An oxygenation tank is installed on the inner left side of the wastewater treatment tank. An air pump is mounted on the top right side of the oxygenation tank. An L-shaped air pipe is fixedly connected to the bottom output end of the air pump. The aeration and dissolved oxygen rate is controlled according to the oxygen requirements of different microorganisms, thereby maintaining the oxygen-containing environment of the water body required by the corresponding microorganisms. This allows for flexible adjustment to meet the diverse needs of the single-aerobic tank, reducing space occupation. Additionally, some clean water is flushed into the circulation pipe to flush out the sludge, performing efficient cleaning operations.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to an MBR wastewater treatment device that facilitates solid-liquid separation. Background Technology

[0002] MBR (Membrane Bioreactor) technology is a new water treatment technology developed in the 1960s. It combines activated sludge process with membrane separation technology to replace traditional sedimentation tanks and achieve efficient sludge-water separation. This technology is classified into three types according to function: aeration membrane, extraction membrane, and solid-liquid separation type. Among them, the solid-liquid separation type is the most widely used, with the characteristics of stable effluent quality, low sludge production, and small footprint.

[0003] In conventional MBR processes, anaerobic, anoxic, and aerobic tanks are often added at the influent end based on the composition of the wastewater to allow corresponding microorganisms to metabolize and degrade pollutants, thereby improving water quality. However, due to the complexity of the wastewater composition, all three aerobic tanks usually need to be installed, which requires a large amount of space and equipment, making it difficult to make flexible adjustments. In addition, some of the wastewater introduced into the membrane module is pumped back to the aerobic tank along with the sludge from the circulation pipe for recycling. As a result, a lot of sludge accumulates in the circulation pipe, and the circulation pipe is often designed with bends, making it difficult to clean, which in turn affects the stability of the wastewater circulation. Utility Model Content

[0004] The purpose of this invention is to provide an MBR wastewater treatment device that facilitates solid-liquid separation. It can control the aeration and oxygenation rate according to the oxygen requirements of different microorganisms, thereby maintaining the oxygen-containing environment of the water body required by the corresponding microorganisms. It can flexibly adjust the single-aerobic tank according to the diverse needs, reduce the space occupied, and can also flush some of the separated clean water into the circulation pipe and flush out the sludge inside, thus performing efficient cleaning operations.

[0005] To achieve the above objectives, an MBR wastewater treatment device facilitating solid-liquid separation is provided, comprising: a wastewater treatment tank, with symmetrically fixed pads at the bottom of the wastewater treatment tank; a membrane module mounted on the inner right side of the wastewater treatment tank; a drain pipe symmetrically connected and fixed to the bottom of the membrane module; the drain pipe extending downwards from the bottom of the wastewater treatment tank and correspondingly penetrating the pads to the right and being fitted and fixed thereto; a drain pipe connected and fixed at the top center of the membrane module; an electrically controlled valve mounted on the top right side of the drain pipe; a flushing pipe connected and fixed at the bottom end of the electrically controlled valve; a flushing pump mounted at the upper middle position of the flushing pipe; a porous conduit connected and connected at the bottom end of the flushing pipe; a guide pipe connected and fixed at the bottom end of the porous conduit; a circulation pipe connected and fixed at the bottom end of the guide pipe; a filter cover mounted on the outer side of the porous conduit; the top of the filter cover connected and fixed to the flushing pipe; and an open bottom design for the filter cover; an oxygen tank mounted on the inner left side of the wastewater treatment tank; and the circulation pipe encircling the bottom and left side of the wastewater treatment tank, penetrating the pads and connecting to the membrane module. The wastewater should be introduced into the oxygen tank from above. An inlet pipe is installed on the top left side of the oxygen tank. A circulation pump is installed in the middle left side of the circulation pipe. An air pump is installed on the top right side of the oxygen tank. An L-shaped air guide pipe is fixedly connected to the bottom output end of the air pump. The horizontal section of the bottom of the L-shaped air guide pipe is located at the bottom of the oxygen tank, and several air guide holes are evenly distributed on its outer side. A sealing cover is fixedly fitted at the top and bottom of the wastewater treatment tank. The inlet pipe, air pump, drainage pipe, and flushing pump are all fitted and fixed to the sealing cover. By setting up the oxygen tank in conjunction with the air pump, L-shaped air guide pipe, and several air guide holes, dissolved oxygen is continuously and comprehensively replenished to the oxygen tank. The aeration and dissolved oxygen rate is controlled according to the oxygen requirements of different microorganisms, thereby maintaining the oxygen-containing environment of the water body required by the corresponding microorganisms. This allows for flexible adjustment to meet the diverse needs of a single oxygen tank, reducing space occupation. In addition, an electric valve is installed in the treated clean water drainage pipe, which connects to the flushing pipe and flushing pump to connect to the circulation pipe, flushing some clean water into the circulation pipe and flushing out the sludge inside, performing efficient cleaning operations.

[0006] According to the MBR wastewater treatment device that facilitates solid-liquid separation, the bottom right end of the inlet pipe is positioned downwards at the bottom of the aeration tank. This prevents newly introduced wastewater from merely floating in the upper or middle layer of the water body.

[0007] According to the MBR wastewater treatment device for easy solid-liquid separation, a pad is fixedly connected to the right side of the circulating pump, and the right side of the pad is fixedly connected to the wastewater treatment tank. The circulating pump and circulating pipeline are positioned and installed.

[0008] According to the MBR wastewater treatment device for facilitating solid-liquid separation, a partition is installed between the oxygen tank and the membrane module. The outer side of the partition is fixed to the inner wall of the wastewater treatment tank, and a guide channel is provided in the upper middle position of the partition. This prevents bottom-layer degraded pollutants from flowing to the membrane module and affecting its solid-liquid separation efficiency.

[0009] According to the MBR wastewater treatment device for easy solid-liquid separation, symmetrical pads are fixed to the bottom of both the oxygen tank and the membrane module, and the bottom of each pad is fixedly connected to the wastewater treatment tank. This raised installation prevents sludge from accumulating and sticking at the bottom.

[0010] According to the MBR wastewater treatment device for facilitating solid-liquid separation, a seepage-proof pad is fixedly attached to the bottom of the wastewater treatment tank to prevent wastewater leakage from the bottom of the tank.

[0011] The above-mentioned solution has the following beneficial effects:

[0012] In this invention, an oxygenation tank is continuously and comprehensively replenished with dissolved oxygen by setting up an oxygenation tank in conjunction with an air pump, an L-shaped air duct, and several air duct holes. The aeration and dissolved oxygenation rate is controlled according to the oxygen requirements of different microorganisms, thereby maintaining the oxygen-containing environment of the water body required by the corresponding microorganisms. This allows for flexible adjustment to meet the diverse needs of the single oxygenation tank, reducing the space occupied. In addition, an electric valve is installed in the treated clean water drainage pipe, which is connected to the flushing pipe and flushing pump to connect to the circulation pipe, flushing some clean water into the circulation pipe and flushing out the sludge inside, thus performing efficient cleaning operations.

[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0015] Figure 1 This is an overall schematic diagram of an MBR wastewater treatment device that facilitates solid-liquid separation according to this utility model.

[0016] Figure 2 This is a schematic diagram of the internal structure of the wastewater treatment tank in an MBR wastewater treatment device that facilitates solid-liquid separation, according to this utility model.

[0017] Figure 3 This is a schematic diagram of the connection structure between the flushing pipe and the circulation pipe in an MBR wastewater treatment device that facilitates solid-liquid separation according to this utility model.

[0018] Figure 4 This is a schematic diagram of the pipeline distribution in the oxygen tank of an MBR wastewater treatment device that facilitates solid-liquid separation, according to this utility model.

[0019] Legend:

[0020] 1. Wastewater treatment tank; 2. Pad; 3. Membrane module; 4. Sewage discharge pipe; 5. Drainage pipe; 6. Electric valve; 7. Flushing pipe; 8. Flushing pump; 9. Filter cover; 10. Porous conduit; 11. Connecting pipe; 12. Circulation pipe; 13. Oxygen tank; 14. Baffle plate; 15. Inlet pipe; 16. Circulation pump; 17. Air pump; 18. L-shaped air duct; 19. Air vent; 20. Impermeable pad; 21. Sealing cover. Detailed Implementation

[0021] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0022] Reference Figure 1-4 This utility model provides an MBR wastewater treatment device that facilitates solid-liquid separation, comprising: a wastewater treatment tank 1, an anti-seepage pad 20 fixedly attached to the bottom of the wastewater treatment tank 1, a pad 2 symmetrically fixed to the bottom of the wastewater treatment tank 1, a membrane module 3 assembled on the inner right side of the wastewater treatment tank 1, a drain pipe 4 symmetrically connected and fixed to the bottom of the membrane module 3, the drain pipe 4 extending downward to the bottom side of the wastewater treatment tank 1 and correspondingly passing through the pad 2 to the right and being fitted and fixed to both, and a drainage pipe 5 connected and fixed at the top center of the membrane module 3 for step-by-step discharge and transportation after solid-liquid separation.

[0023] An electric control valve is installed on the top right side of the drainage pipe 5. The bottom end of the electric control valve is connected to and fixed to a flushing pipe 7. A flushing pump 8 is installed in the upper middle position of the flushing pipe 7. The bottom end of the flushing pipe 7 is connected to and connected to a porous conduit 10. The bottom end of the porous conduit 10 is connected to and fixed to a guide pipe 11. The bottom end of the guide pipe 11 is connected to and fixed to a circulation pipe 12. A filter cover 9 is mounted on the outside of the porous conduit 10. The top of the filter cover 9 is connected to and fixed to the flushing pipe 7. The bottom of the filter cover 9 is designed to be open, so that some of the separated clean water is flushed into the circulation pipe 12 and the sludge inside is flushed out accordingly, so as to carry out efficient cleaning. During the flushing process, the porous conduit 10 will also discharge some clean water through its through holes to simply flush the filter cover 9 and the sludge around the through holes, so as to avoid clogging the through holes and ensure stable circulation.

[0024] An oxygen tank 13 is installed on the inner left side of the wastewater treatment tank 1. A partition 14 is installed between the oxygen tank 13 and the membrane module 3. The outer side of the partition 14 is fixed to the inner wall of the wastewater treatment tank 1. A flow guide groove is opened in the middle and upper part of the partition 14. The bottom of the oxygen tank 13 and the membrane module 3 are symmetrically fixed with pads on the left and right sides. The bottom of the pads is fixedly connected to the wastewater treatment tank 1. The circulation pipe 12 runs around the bottom and left side of the wastewater treatment tank 1, passes through the pad 2, and is introduced into the oxygen tank 13 from the top of the wastewater treatment tank 1 to circulate and guide the flow while restricting and isolating the sludge.

[0025] An inlet pipe 15 is installed on the top left side of the oxygen tank 13. The bottom right end of the inlet pipe 15 is placed downwards at the bottom of the oxygen tank 13. A circulation pump 16 is installed in the middle left side of the circulation pipe 12. A pad is fixedly connected to the right side of the circulation pump 16. The right side of the pad is fixedly connected to the sewage treatment tank 1. An air pump 17 is installed on the top right side of the oxygen tank 13. An L-shaped air guide pipe 18 is fixedly connected to the bottom output end of the air pump 17. The bottom horizontal section of the L-shaped air guide pipe 18 is located at the bottom of the oxygen tank 13, and several air guide holes 19 are evenly opened on its outer side. A sealing cover plate 21 is fixedly engaged at the top and bottom of the sewage treatment tank 1. The inlet pipe 15, air pump 17, drainage pipe 5 and flushing pump 8 are all fitted and fixedly engaged with the sealing cover plate 21. The aeration and oxygenation rate is controlled according to the oxygen requirements of different microorganisms, thereby maintaining the oxygen-containing environment of the water body required by the corresponding microorganisms. The oxygen tank 13 can be flexibly adjusted to meet the diverse needs of the single oxygen tank 13, reducing the space occupied.

[0026] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires, and should select appropriate controllers according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical components are connected in sequence. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, and will not describe the electrical control further.

[0027] Working principle: In this utility model, dissolved oxygen is continuously and comprehensively replenished to the oxygen tank 13 by setting up an oxygen tank 13 in conjunction with an air pump 17, an L-shaped air pipe 18, and several air holes 19. The aeration and dissolved oxygen rate is controlled according to the oxygen requirements of different microorganisms, thereby maintaining the oxygen-containing environment of the water body required by the corresponding microorganisms. The oxygen tank 13 can be flexibly adjusted to meet the diverse needs of the single oxygen tank 13, reducing the space occupied. In addition, an electric valve 6 is installed in the treated clean water drainage pipe 5, which is connected to the flushing pipe 7 and the flushing pump 8 to connect to the circulation pipe 12 to flush some clean water into the circulation pipe 12 and flush out the sludge inside, thus performing efficient cleaning operations.

[0028] In the description of this utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," and "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Furthermore, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "fixed installation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An MBR wastewater treatment device that facilitates solid-liquid separation, comprising: A wastewater treatment tank (1) is characterized in that: a pad (2) is symmetrically fixed to the bottom of the wastewater treatment tank (1); a membrane assembly (3) is assembled on the inner right side of the wastewater treatment tank (1); a drain pipe (4) is symmetrically connected and fixed to the bottom of the membrane assembly (3); the drain pipe (4) extends downward from the bottom side of the wastewater treatment tank (1) and passes through the pad (2) to the right and is fitted and fixed to both; a drainage pipe (5) is connected and fixed at the center of the top of the membrane assembly (3); the drainage pipe... An electric control valve is mounted on the top right side of (5). The bottom end of the electric control valve is connected to and fixed with a flushing pipe (7). A flushing pump (8) is mounted on the upper middle position of the flushing pipe (7). The bottom end of the flushing pipe (7) is connected to and connected to a porous conduit (10). The bottom end of the porous conduit (10) is connected to and fixed with a guide pipe (11). The bottom end of the guide pipe (11) is connected to and fixed with a circulation pipe (12). A filter cover (9) is mounted on the outside of the porous conduit (10). The top of the filter cover (9) is connected to the flushing pipe. (7) Connected and fixed, the bottom of the filter cover (9) is designed with an opening, the inner left side of the sewage treatment tank (1) is equipped with an oxygen tank (13), the circulation pipe (12) runs around the bottom and left side of the sewage treatment tank (1) and passes through the pad (2) and is introduced into the oxygen tank (13) from the top of the sewage treatment tank (1) downwards, the oxygen tank (13) is equipped with an inlet pipe (15) on the top left side, the circulation pipe (12) is equipped with a circulation pump (16) in the middle left side, the oxygen tank (13) An air pump (17) is mounted on the top right side of the air pump (17). The bottom output end of the air pump (17) is connected to and fixed with an L-shaped air guide pipe (18). The bottom horizontal section of the L-shaped air guide pipe (18) is located at the bottom of the oxygen tank (13) and several air guide holes (19) are evenly opened on its outer side. A sealing cover plate (21) is fixedly engaged on the top of the sewage treatment tank (1). The water inlet pipe (15), air pump (17), drainage pipe (5) and flushing pump (8) are all fitted and fixed to the sealing cover plate (21).

2. The MBR wastewater treatment device for easy solid-liquid separation according to claim 1, characterized in that, The bottom right end of the water inlet pipe (15) is placed downwards at the bottom of the oxygen tank (13).

3. The MBR wastewater treatment device for easy solid-liquid separation according to claim 1, characterized in that, A pad is fixedly connected to the right side of the circulating pump (16), and the right side of the pad is fixedly connected to the sewage treatment tank (1).

4. The MBR wastewater treatment device for easy solid-liquid separation according to claim 1, characterized in that, A partition (14) is installed between the oxygen tank (13) and the membrane module (3). The outer side of the partition (14) is fixed to the inner wall of the sewage treatment tank (1). A flow guide groove is provided in the upper middle position of the partition (14).

5. The MBR wastewater treatment device for easy solid-liquid separation according to claim 1, characterized in that, The bottom of both the oxygen tank (13) and the membrane module (3) is symmetrically fixed with pads, and the bottom of each pad is fixedly connected to the sewage treatment tank (1).

6. The MBR wastewater treatment device for easy solid-liquid separation according to claim 1, characterized in that, The bottom of the sewage treatment tank (1) is fitted with a seepage-proof pad (20).

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